:root{--tg-bg: #ffffff;--tg-text: #000000;--tg-hint: #999999;--tg-link: #2481cc;--tg-button: #2481cc;--tg-button-text: #ffffff;--tg-secondary-bg: #f1f1f1;--tg-header-bg: #ffffff;--tg-accent: #2481cc;--tg-destructive: #e53935;--radius: 14px;--gap: 12px;--success: #2e9b51;--error: var(--tg-destructive)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body,#root{height:100%;margin:0}body{background:var(--tg-bg);color:var(--tg-text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:16px;line-height:1.45;overscroll-behavior-y:none}#root{display:flex;flex-direction:column}.app{flex:1;width:100%;max-width:640px;margin:0 auto;padding:16px 16px calc(24px + env(safe-area-inset-bottom))}h1,h2,h3{line-height:1.25}h1{font-size:1.5rem;margin:0 0 4px}.subtitle{color:var(--tg-hint);margin:0 0 16px}a{color:var(--tg-link)}.hint{color:var(--tg-hint)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;border-radius:var(--radius);background:var(--tg-button);color:var(--tg-button-text);font-size:1rem;font-weight:600;padding:13px 18px;cursor:pointer;width:100%;transition:opacity .15s,transform .05s}.btn:active{transform:scale(.985)}.btn:disabled{opacity:.5;cursor:default}.btn.secondary{background:var(--tg-secondary-bg);color:var(--tg-text)}.btn.ghost{background:transparent;color:var(--tg-link)}.card{background:var(--tg-secondary-bg);border-radius:var(--radius);padding:16px;margin-bottom:var(--gap)}.lesson-row{display:flex;align-items:center;justify-content:space-between;background:var(--tg-secondary-bg);border-radius:var(--radius);padding:14px 16px;margin-bottom:10px;cursor:pointer;text-align:left;width:100%;border:none;color:inherit;font:inherit}.lesson-row:active{opacity:.7}.lesson-row .meta{color:var(--tg-hint);font-size:.85rem;margin-top:2px}.lesson-num{font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--tg-accent);margin-bottom:2px}.lesson-row .chev{color:var(--tg-hint);font-size:1.3rem}.badge{display:inline-block;min-width:22px;text-align:center;background:var(--tg-button);color:var(--tg-button-text);border-radius:11px;padding:1px 7px;font-size:.8rem;font-weight:700}.actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:16px 0}.md p{margin:0 0 10px}.md ul{margin:0 0 10px;padding-left:20px}.md li{margin:3px 0}.md strong{font-weight:700}.md em{font-style:italic;color:var(--tg-accent)}.tbl-wrap{overflow-x:auto}table.tbl{border-collapse:collapse;width:100%;font-size:.95rem}table.tbl th,table.tbl td{border:1px solid color-mix(in srgb,var(--tg-hint) 35%,transparent);padding:8px 10px;text-align:left}table.tbl th{background:color-mix(in srgb,var(--tg-button) 15%,transparent);font-weight:700}.note{border-radius:var(--radius);padding:12px 14px;margin-bottom:var(--gap);border-left:4px solid var(--tg-button);background:color-mix(in srgb,var(--tg-button) 10%,var(--tg-bg))}.note.culture{border-left-color:#9b59b6;background:color-mix(in srgb,#9b59b6 10%,var(--tg-bg))}.note.warning{border-left-color:#e6a700;background:color-mix(in srgb,#e6a700 12%,var(--tg-bg))}.conj-tense-tabs{display:flex;gap:8px;margin-bottom:10px}.conj-tense-tabs button{flex:1;border:none;border-radius:10px;padding:8px;font-weight:600;background:var(--tg-secondary-bg);color:var(--tg-text);cursor:pointer}.conj-tense-tabs button.active{background:var(--tg-button);color:var(--tg-button-text)}.ex-input{width:100%;border-radius:10px;border:1px solid color-mix(in srgb,var(--tg-hint) 40%,transparent);background:var(--tg-bg);color:var(--tg-text);padding:11px 12px;font-size:1rem}.ex-input.correct{border-color:var(--success)}.ex-input.wrong{border-color:var(--error)}.choice-opt{text-align:left;margin-bottom:8px}.choice-opt.correct{background:color-mix(in srgb,var(--success) 25%,var(--tg-secondary-bg))}.choice-opt.wrong{background:color-mix(in srgb,var(--error) 25%,var(--tg-secondary-bg))}.feedback{font-size:.9rem;margin-top:6px}.feedback.ok{color:var(--success)}.feedback.no{color:var(--error)}.deck{position:relative;height:60vh;min-height:360px;margin:12px 0 18px}.flashcard{position:absolute;top:0;right:0;bottom:0;left:0;background:var(--tg-secondary-bg);border-radius:20px;padding:24px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;box-shadow:0 6px 20px #0000001f;touch-action:pan-y;-webkit-user-select:none;user-select:none;cursor:grab}.flashcard .word{font-size:2rem;font-weight:700}.flashcard .translit{color:var(--tg-hint);margin-top:6px}.flashcard .answer{font-size:1.4rem;margin-top:18px}.flashcard .tap-hint{position:absolute;bottom:16px;color:var(--tg-hint);font-size:.85rem}.swipe-tag{position:absolute;top:18px;font-size:1.1rem;font-weight:800;padding:6px 12px;border-radius:10px;border:2px solid;opacity:0;transition:opacity .05s}.swipe-tag.know{right:18px;color:var(--success);border-color:var(--success);transform:rotate(12deg)}.swipe-tag.dont{left:18px;color:var(--error);border-color:var(--error);transform:rotate(-12deg)}.deck-controls{display:grid;grid-template-columns:1fr 1fr;gap:12px}.progress-pill{text-align:center;color:var(--tg-hint);margin-bottom:8px}.match-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.match-timer{font-variant-numeric:tabular-nums;font-size:1.5rem;font-weight:700}.match-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.tile{border:2px solid transparent;border-radius:12px;background:var(--tg-secondary-bg);color:var(--tg-text);padding:16px 10px;min-height:64px;font-size:1rem;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;text-align:center;transition:transform .08s,opacity .2s,border-color .1s,background .1s}.tile.selected{border-color:var(--tg-button);background:color-mix(in srgb,var(--tg-button) 18%,var(--tg-secondary-bg))}.tile.wrong{border-color:var(--error);background:color-mix(in srgb,var(--error) 20%,var(--tg-secondary-bg))}.tile.matched{opacity:0;pointer-events:none;transform:scale(.8)}.progress-bar{height:6px;border-radius:3px;background:color-mix(in srgb,var(--tg-hint) 30%,transparent);overflow:hidden;margin-top:8px}.progress-bar-fill{height:100%;border-radius:3px;background:var(--tg-button);transition:width .3s ease}.progress-label{font-size:.8rem;color:var(--tg-hint);margin-top:4px}.drill-prompt{text-align:center;padding:20px 12px}.drill-verb{font-size:1.6rem;font-weight:700}.drill-meta{color:var(--tg-hint);margin-top:6px}.drill-chips{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-top:12px}.chip{background:var(--tg-secondary-bg);border-radius:20px;padding:5px 12px;font-size:.9rem;font-weight:600}.chip.sign{min-width:34px;text-align:center;font-size:1.1rem}.drill-options{display:grid;gap:10px;margin-top:8px}.sentence-ru{font-size:1.2rem;font-weight:600;text-align:center;margin:8px 0 16px}.sentence-answer{min-height:56px;border:2px dashed color-mix(in srgb,var(--tg-hint) 40%,transparent);border-radius:12px;padding:10px;display:flex;flex-wrap:wrap;gap:8px;align-content:flex-start;margin-bottom:16px}.sentence-answer.correct{border-style:solid;border-color:var(--success)}.sentence-answer.wrong{border-style:solid;border-color:var(--error)}.sentence-bank{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}.word-tile{border:none;border-radius:10px;background:var(--tg-secondary-bg);color:var(--tg-text);padding:10px 14px;font-size:1rem;font-weight:600;cursor:pointer}.word-tile.used{opacity:.35;pointer-events:none}.word-tile.in-answer{background:color-mix(in srgb,var(--tg-button) 20%,var(--tg-secondary-bg))}.center{text-align:center;padding:40px 0;color:var(--tg-hint)}.spinner{width:28px;height:28px;border:3px solid color-mix(in srgb,var(--tg-hint) 40%,transparent);border-top-color:var(--tg-button);border-radius:50%;margin:0 auto 12px;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}